8.51. Calculate Triangle Normals

Group (Subgroup)

Surface Meshing (Misc)

Description

This Filter computes the normal of each Triangle in a Triangle Geometry by utilizing matrix subtraction, cross product, and normalization to implement the following theory: For a triangle with point1, point2, point3, if the vector U = point2 - point1 and the vector V = point3 - point1

Nx = UyVz - UzVy
Ny = UzVx - UxVz
Nz = UxVy - UyVx

Where "point#" represents a 3x1 Matrix of coordinates x, y, and z belonging to one of a Triangles vertexes and N represents the normal of the corresponding axis value

Input Data Objects

Parameter Name	Parameter Type	Parameter Notes	Description
Triangle Geometry	Geometry Selection	Triangle	The complete path to the Geometry for which to calculate the normals

Output Face Data

Parameter Name	Parameter Type	Parameter Notes	Description
Created Face Normals	DataObjectName		The complete path to the array storing the calculated normals

Example Pipelines

• (03) SmallIN100 Mesh Statistics

• Triangle_Face_Data_Demo.d3dpipeline

License & Copyright

Please see the description file distributed with this Plugin

DREAM3D-NX Help

If you need help, need to file a bug report or want to request a new feature, please head over to the DREAM3DNX-Issues GitHub site where the community of DREAM3D-NX users can help answer your questions.